(1) Nothing in this Part prevents a licensed trustee company from charging:
(a) any fees that a testator, in his or her will, has directed to be paid; or
(b) any fees that have been agreed on in accordance with subsection (2).
(2) An agreement referred to in paragraph (1)(b) that relates to the fees that may be charged by a licensed trustee company for the provision of a particular traditional trustee company service must be between the trustee company and:
(a) subject to paragraph (b) of this subsection--a person or persons who have authority to deal with the trustee company on matters relating to the provision of the service; or
(b) if the regulations prescribe the person or persons with whom the agreement must be made--that person or those persons.